1273941043200 has 1080 divisors, whose sum is σ = 5489633699550. Its totient is φ = 291140075520.

The previous prime is 1273941043171. The next prime is 1273941043231. The reversal of 1273941043200 is 23401493721.

It is a happy number.

1273941043200 is a `hidden beast` number, since 1 + 2 + 7 + 39 + 410 + 4 + 3 + 200 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 834021909504 + 439919133696 = 913248^2 + 663264^2 .

It is a tau number, because it is divible by the number of its divisors (1080).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 203209666 + ... + 203215934.

Almost surely, 2^{1273941043200} is an apocalyptic number.

1273941043200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273941043200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2744816849775).

1273941043200 is an abundant number, since it is smaller than the sum of its proper divisors (4215692656350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1273941043200 is an equidigital number, since it uses as much as digits as its factorization.

1273941043200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6327 (or 6286 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 1273941043200 in words is "one trillion, two hundred seventy-three billion, nine hundred forty-one million, forty-three thousand, two hundred".